
Exploring Database Systems
Authored by NURHAFIZAH MAHRI
Information Technology (IT)
12th Grade

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a relational database?
A relational database is a collection of unstructured data.
A relational database is a type of cloud storage service.
A relational database is a software application for managing emails.
A relational database is a database that organizes data into tables with defined relationships between them.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Define primary key in a relational database.
A primary key is a foreign key in another table.
A primary key is a unique identifier for a record in a relational database table.
A primary key is an optional field in a database record.
A primary key can have duplicate values in a table.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is SQL and what is its purpose?
SQL is a type of spreadsheet software.
SQL is primarily used for graphic design.
SQL is a programming language used for managing and manipulating relational databases.
SQL is a markup language for web development.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Write a SQL query to select all records from a table named 'Students'.
SELECT * FROM Students;
SELECT Students WHERE 1=1;
GET * FROM Students;
SELECT ALL FROM Students;
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain the concept of database normalization.
Database normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
Database normalization is the technique of merging all tables into one large table.
Database normalization is the process of deleting all data from a database.
Database normalization refers to the method of increasing redundancy in data storage.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the different normal forms in database normalization?
1NF, 2NF, 3NF, BCNF, 4NF, 5NF
1NF, 2NF, 3NF, 6NF
1NF, 2NF, 3NF, 4NF, 7NF
1NF, 2NF, 3NF, 4NF, 5NF, 6NF
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an entity in an Entity-Relationship model?
An entity is a collection of attributes that describe a thing.
An entity is a type of relationship between two objects.
An entity is a distinct object or thing in the real world that can be identified.
An entity is a process that occurs in a system.
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